Thodoris Sotiropoulos created GROOVY-9934:
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Summary: Bounded type parameter is not captured by closure
Key: GROOVY-9934
URL: https://issues.apache.org/jira/browse/GROOVY-9934
Project: Groovy
Issue Type: Bug
Components: Static compilation
Affects Versions: 3.0.7
Reporter: Thodoris Sotiropoulos
I have the following Groovy program
{code:java}
class Bar {}class Foo<T extends Bar> {
public T method(T x) {
def bar = {x}
return bar()
}
}
{code}
h3. Actual Behavior
The compiler raise the following compile-time error
{code:java}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Main.groovy: 6: [Static type checking] - Cannot return value of type
java.lang.Object on method returning type T
@ line 6, column 12.
return bar()
^1 error
{code}
h3. Expected Behavior
Compile successfully. Notably, when I remove the "extends" keyword from the
type parameter, the code type checks as expected.
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